International Date Line and Time

1.If the difference in time between two places is 2 hours 20 minutes, then the difference in longitude will be –
 
A. 45 degree
 
B. 30 degrees
 
C. 40 degree
 
D. 35 degree
 
Option “D” is correct.
 If it is given that the difference between times of two places is 2 hours and 20 minutes then, the difference in their longitudes would be 35°.
2.Where does the International Date Line pass through?
 
A. 0 degree
 
B. 180 degree
 
C. 90 degrees
 
D. 270 degree
 
Option “B” is correct.
The international date line, established in 1884, passes through the mid-Pacific Ocean and roughly follows a 180 degrees longitude north-south line on the Earth.
3.What country is Greenwich in?
 
A. USA
 
B. England
 
C. Holland
 
D. India
 
Option “B” is correct.
Greenwich, royal borough and outer borough of London, England. It lies on the south bank of the River Thames in the historic county of Kent. Greenwich is famous for its naval and military connections and its green spaces.
4.What is the difference between the local time of two places in crossing a longitude?
 
A. 8 minutes
 
B. 4 minutes
 
C. 2 minutes
 
D. 0 minutes
 
Option “B” is correct.
The time difference between any two longitudes is 4 minutes. The places located in the East of the Prime Meridian are ahead in time of the places located in the Western Hemisphere.
5.Which of the following statements is incorrect regarding the International Date Line?
 
A. This is an imaginary line.
 
B. In the Bering Sea, this line is bent towards the west.
 
C. At 75 degree north latitude, this line is turned towards the west.
 
D. In the South Pacific Ocean, this line is turned east to keep New Zealand and Fiji Islands together.
 
Option “C” is correct.
6.At any given moment in which one of the following cities the time of the clock is not the same as the time of the clock of the other three cities?
 
A. London (UK)
 
B. Lisbon, Portugal)
 
C. Addis Ababa (Ethiopia)
 
D. Accra (Ghana)
 
Option “C” is correct.
London, Lisbon and Accra cities are situated approximately on the same longitude away from Addis Ababa showing the same clock time.
7.When it is noon in Greenwich, the local time of a place is 5 pm. Which of the following is the meridian on which the above mentioned place is situated?
 
A. 75 degree east
 
B. 75 degree p.
 
C. 150 degree east
 
D. 150 degree p.
 
Option “A” is correct.
8.The time of Cairo is two hours ahead of Greenwich, hence it is located in –
 
A. at 30 degree west longitude
 
B. at 30 degree east longitude
 
C. at 28 degree east longitude
 
D. at 28 degree west longitude
 
Option “B” is correct.
The time at Cairo is 2 hours ahead of Greenwich Hence it is located at … For 2 hrs, there will be a difference of 30 degrees. So the correct answer is 30 degree east as Cairo is ahead of Greenwich time.
9.Time difference between two cities, city A (30′ degree N 60′ degree E ) and city B (30′ degree N 80′ degree E)
 
A. will be 80 minutes
 
B. will be 0 minutes
 
C. will be 20 minutes
 
D. will be 34 minutes
 
Option “A” is correct.
10.What is the time difference between Greenwich Mean Time (GMT) and Indian Standard Time (IST)?
 
A. 4 hours 30 minutes
 
B. 5 hours 30 minutes
 
C. 6 hours
 
D. 6 hours 30 minutes
 
Option “B” is correct.
India has only one time zone. *IST is ahead of GMT by 5:30 Hours.

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